Croissants > INFORMATION SHEET DEFINITION Crescent-shaped roll made from yeasted dough layered to make flaky puff pastry. May be flavoured with almond paste, chocolate or cheese. Should be light and flaky in texture and melt in the mouth. HISTORY Croissants are thought to have originated in Austria. In 1683 when the Turks were secretly digging tunnels under Vienna to make a surprise attack on the city they were heard by bakers working early in the morning. The bakers who raised the alarm and saved Vienna from being defeated by the Turks then baked a special commemorative roll in the shape of the crescent, as seen on the Turkish flag. Marie Antoinette introduced the roll to France where it became known as the croissant, the French word for crescent. INGREDIENTS INGREDIENT FUNCTION & SPECIFICATIONS (*Based on flour content.) Flour Strong with protein content of 11.5–13%. The extensibility of the protein is important during folding and rolling of pastry. Needs to have good gas retention properties to help trap carbon dioxide produced by the yeast. To slow down the yeast it is recommended that flour is chilled in a freezer or fridge for 24 hours before use. Butter Within the dough: 4–5%* to lubricate gluten strands during mixing and assist with lamination process. Roll in butter: To add flavour and tenderness to the finished product. Added into dough by English or French method for puff pastry to achieve hundreds of layers of dough, fat, dough, fat...to produce a flaky croissant. Ideal butter temperature is 14–15ºC. Sugar For crust colour, sweetness and to make the finished product tender. Salt For flavour, to control fermentation and strengthen the gluten strands. Yeast For flavour and aeration. Amounts vary depending on the amount of sugar, fats and eggs used in the dough. As more of these ingredients are added, more yeast is required. If the croissants are to be frozen then the yeast amount should be doubled. Water Added to hydrate the flour proteins and combine all ingredients. Water should be chilled for 24 hours before use to slow down fermentation of yeast. Milk powder For crust bloom, flavour, crumb texture and to produce a flaky texture. Optional ingredients include eggs, which can add richness and strength to dough, and improvers/dough conditioners, which can assist in the final volume. PROCESSING Two sets of skills are needed for manufacture: bread (yeast raised) and puff pastry making. Yeast requires care hence the need for chilling the dough (pastry) between each fold/turn to prevent the yeast from working too fast and losing effectiveness during proofing and baking stages. PROCESSING PROCESS DETAILS Mixing The aim is to achieve proper blending and hydration of the ingredients. Some gluten development is desirable to make dough handling easier at the early stages of laminating. Dough temperature Ideal temperature is 19 + 2ºC as the dough ingredients will readily hydrate and roll-in fat will remain firm. Laminating The flakiness of croissants depends on the formation of many thin films of gluten protein which trap water vapour and carbon dioxide from fermentation. Laminating separates these films with fat. The process consists of a series of sheetings, where the dough is reduced to 1/3 or 1/4 of its thickness before being folded into 3 or 4 layers. Most croissants are made from three folds after the fat has been incorporated which gives 54 fat layers, although by changing one three-fold to a book-fold the number of fat layers is increased to 72. Number and type of folds is determined by whether a soft or firm roll-in fat is used. BIRT CROISSANTS INFORMATION SHEET | V1.0 2011 >1 Croissants > INFORMATION SHEET Resting & retarding dough Whether the dough is rested is dependent on the baker’s opinion on the desired final product qualities and whether the process is automated or hands on. Most important is the use of good quality yeast. Dough makeup Laminated dough should be subjected to as little compression during sheeting and makeup as possible. The dough should be stretched rather than squeezed between reduction rollers. The cutting edge should be sharp. Final thickness of dough sheet before makeup is determined by size of the finished product – the smaller the roll then the thinner the sheet. Dough is cut into triangles of desired size which are then rolled starting from the base usually with three-and-a-half to four full turns, with ends of roll bent inwards to form a crescent. The final shape has slight differences in different regions of France. Egg wash Is recommended for bakers who proof their croissants for a long time in an open warm room. Proofing The most important step to produce quality croissants. This stage must be closely monitored. The proof temperature must not exceed melting point of roll in fat and ambient relative humidity must be in the range of 75–85%. It is generally agreed that croissants need to expand to two-and-a-half times their original volume and, depending on temperature, this may take 1–3 hours. Under proofing causes collapse of internal crumb structure. Baking Depending on type of oven and size of croissants the baking time can vary from 10–20 minutes and oven temperature from 165–205ºC. Packaging Croissants must be packed in grease-proof film or a poly coated box. Due to their high fat content and tendency of fat to absorb odours, they need to be kept away from all strong smells. Packaging should offer little head space to avoid drying out or freeze burn. TROUBLE SHOOTING PROBLEM PROBABLE CAUSE REMEDY Butter breaks through dough Butter too cold Dough too soft Harsh sheeting reduction Condition butter to 14–16ºC before use. Reduce water in dough so same consistency as butter at 14–16ºC. Use gradual and even sheeting reduction Butter oozes out from dough Butter too warm Dough too warm Dough too tight Condition butter to 14–16ºC before use. Chill dough. Increase water in dough. Butter melts during proof Proofer too warm Insufficiently laminated Reduce power temperature to 30–32ºC. Laminate with minimum of three book folds. Baked pastries are misshapen Irregular laminating Butter too hard Oven too hot Rolled out too thinly or quickly Use butter sheets. Condition butter to 14–16ºC before use. Bake croissants at 230ºC. Use gradual and even sheeting reduction. Baked pastries show fatty patches inside Insufficiently laminated Excess roll-in butter Laminate with minimum of three book folds. Reduce roll-in butter (max 75% flour weight). Pastry sticks to sheeting rollers Insufficient dusting Room too warm Use more flour for dusting during sheeting. Work in cooler room or at cooler time of day Pastry topples during baking Too few folds Dough pieces too thick Increase number of folds. Roll slightly thinner. BIRT CROISSANTS INFORMATION SHEET | V1.0 2011 >2 Croissants > INFORMATION SHEET Tough end product Too little layering butter Too little dough butter Baking temperature too low Increase butter (max 75% flour weight). Increase dough butter. Bake croissants at 230ºC. REFERENCES April 1985. Beat the French at their own game: Croissants. Bakers Review. Brettschneider D 2000. Croissants. The NZ Bakers Journal. Autumn Issue – April/May. Doerry WT, Meloan E 1986. Croissant technology. AIB Research Department Technical Bulletin. Volume VIII, Issue 10. New Zealand Dairy Board 2000. A guide to solving faults that can occur during the production of Danish Pastries and Croissants. New Zealand Dairy Board. Flour Milling and Baking Research Association 1993. Danish Pastries and croissants. Report No. 153, August 1993. BIRT CROISSANTS INFORMATION SHEET | V1.0 2011 >3